He is likely to contest from one of the seven seats in Delhi in the upcoming Lok Sabha polls.

"I joined the party looking at the enthusiasm. The party has grown from the roots. It does not see politics as dirty and something that should be avoided," said Rajmohan Gandhi after officially joining AAP.

"I'm open to contesting but contesting against Narendra Modi is a very long shot. At one point, the Congress was an aam aadmi party, now it is the khas aadmi party. BJP is the rich man's party," he said.

Rajmohan Gandhi (born 1935) is a research professor at the Center for South Asian and Middle Eastern Studies, University of Illinois at Urbana-Champaign, USA.

He is also a scholar in residence at Indian Institute of Technology, Gandhinagar.

Rajmohan Gandhi has been engaged for half a century in efforts for trust-building, reconciliation and democracy and in battles against corruption and inequalities.